APA-referens (7:e uppl.)

Bugental, J. F. T. (1967). Challenges of humanistic psychology. McGraw-Hill.

Chicago-referens (17:e uppl.)

Bugental, James F. T. Challenges of Humanistic Psychology. New York: McGraw-Hill, 1967.

MLA-referens (9:e uppl.)

Bugental, James F. T. Challenges of Humanistic Psychology. McGraw-Hill, 1967.